Neocyclotus chrysacme (P. Bartsch& J.P.E. Morrison, 1942)
Incerticyclus cinereus (H. Drouët, 1859)
Aperostoma cingulatum (G.B. Sowerby, 1843)
Poteria clappi C. de la Torre & P. Bartsch,1942
Incidostoma confusum (E.R. Sykes, 1894)
Incerticyclus connivens (A. Adams, 1866)
Ostodes cookei W.J. Clench, 1949
Dicrista cooperi (G.W. Tryon, 1863)
Neocyclotus corpulentum (E.A. Smith, 1878)
Poteria corrugata (K.T. Menke, 1830)
Poteria corrugatior (E. Chitty, 1857)
Poteria corrugatissima (E. Chitty, 1857)
Incidostoma costaricense (E.C. Von Martens, 1876)
Gassiesia couderti (P. Fischer& A.C. Bernardi, 1856)
Poteria crassa (C.B. Adams)
Lagocyclus crosseanus (J.G. Hidalgo, 1866)
Calaperostoma cumingi (G.B. I Sowerby, 1832)
Neocyclotus currani (P. Bartsch& J.P.E. Morrison, 1942)
Daronia cyclotina A. Adams, 1864
Poteria daltei J.P.E. Morrison, 1955
Dicrista damianensis (G.A. Solem, 1956)
Cyclochittya dentistigmata (E. Chitty, 1857)
Aperostoma depressum (S.I. Da Costa, 1906)
Fijiopoma diatreta (A.A. Gould, 1847)
Aperostoma dilatatum F. Haas, 1955
Amphicyclotus dominicensis P. Bartsch, 1942
Cyclovendreysia dubiosa (C.B. Adams, 1851)
Incidostoma dunkeri L. Pfeiffer
Aperostoma dunoonense P. Bartsch& J.P.E. Morrison, 1942
Neocyclotus dysoni (L. Pfeiffer, 1851)
Neocyclotus dysoni affinis (E.C. Von Martens, 1890)
Neocyclotus dysoni berendti (L. Pfeiffer, 1861)
Neocyclotus dysoni cookei (P. Bartsch& J.P.E. Morrison, 1942)
Neocyclotus dysoni sallei (P. Bartsch& J.P.E. Morrison, 1942)
Incidostoma exiguum (P. Bartsch& J.P.E. Morrison, 1942)